.video {
  width: 20rem;
  height: 11.304348rem;
  background-color: #999;
}
.tab_bar {
  height: 2.898551rem;
  display: flex;
  justify-content: space-around;
  box-sizing: border-box;
  padding-top: .966184rem;
  border-bottom: #eee 1px solid;
  .tab_item {
    height: 34px;
    display: inline-block;
    color: #CCCCCC;
    font-size: .772947rem;
    font-weight: bold;
    &.tab_active {
      color: #0CB1FF;
      border-bottom: #0CB1FF 2px solid;
    }
  }
}
.course_title {
  box-sizing: border-box;
  padding: .966184rem;
  padding-bottom: .483092rem;
  font-size: .772947rem;
  font-weight: bold;
}
.course_infos {
  display: flex;
  box-sizing: border-box;
  padding: 0 .966184rem;
  align-items: center;
  color: #999;
  font-size: .57971rem;
  justify-content: space-between;
}
.course_description {
  color: #999;
  font-size: .676329rem;
  box-sizing: border-box;
  padding: .483092rem .966184rem;
}
.buy_btn {
  display: block;
  width: 18.067633rem;
  height: 1.932367rem;
  line-height: 1.932367rem;
  background-color: #0CB1FF;
  color: #fff;
  border: unset;
  border-radius: .483092rem;
  outline: unset;
  margin: 0 auto;
  font-size: .676329rem;
}

.course_list_title {
  box-sizing: border-box;
  padding: .966184rem;
  font-size: .772947rem;
  font-weight: bold;
  display: flex;
  align-items: center;
  color: #333;
  span {
    font-weight: normal;
  }
  p {
    flex: 1;
  }
}

.course_item {
  display: flex;
  align-items: center;
  width: 18.067633rem;
  height: 3.381643rem;
  box-sizing: border-box;
  padding: 0 .483092rem;
  margin: .241546rem auto;
  .course_item_left {
    flex: 1;
    display: flex;
    align-items: center;
    height: inherit;
    .course_item_name {
      width: 7.246377rem;
      font-size: .772947rem;
      overflow: hidden;
      white-space: nowrap;
      text-overflow: ellipsis;
    }
    .course_item_free {
      width: 1.642512rem;
      height: .966184rem;
      font-size: .57971rem;
      border: #0CB1FF 1px solid;
      color: #0CB1FF;
      text-align: center;
      line-height: .966184rem;
      border-radius: .193237rem;
      margin-left: .483092rem;
    }
    i {
      display: none;
      width: .966184rem;
      height: .966184rem;
      background-color: #0CB1FF;
      margin-left: .966184rem;
    }
  }
  .course_item_time {
    color: #ccc;
    font-size: .676329rem;
  }
}
.course_item_active {
  box-shadow: 0px .096618rem .289855rem 0px rgba(204, 204, 204, 61);
  .course_item_left {
    i {
      display: block;
    }
  }
}
/* 老师信息 */
.teacher_title {
  box-sizing: border-box;
  padding: .966184rem;
  font-size: .772947rem;
  font-weight: bold;
}
.teacher_info {
  display: flex;
  box-sizing: border-box;
  padding: 0 .966184rem;
  padding-bottom: .966184rem;
  border-bottom: #f7f7f7 1px solid;
  img {
    box-sizing: border-box;
    width: 4.154589rem;
    height: 4.154589rem;
    border-radius: 50%;
    border: #E2E2E2 .096618rem solid;
    flex-shrink: 0;
  }
  .teacher_info_main {
    flex: 1;
    padding-left: .966184rem;
    .teacher_name {
      font-size: .869565rem;
      padding-top: .772947rem;
    }
    p {
      font-size: .676329rem;
      color: #999;
      height: 32px;

    }
  }
}

/* 课程详情 */
.course_detail_title {
  box-sizing: border-box;
  padding: .966184rem;
  font-size: .772947rem;
  color: #333;
  padding-bottom: .483092rem;
  font-weight: bold;
}
.course_detail_img {
  width: 17.874396rem;
  height: 33.816425rem;
  margin: 0 auto;
  background-color: #ccc;
  display: block;
  margin-bottom: 1.449275rem;
}